Die Grinder, Duty Heavy Duty, Horsepower 0.4 hp, Collet Size 1/4 in, Grinder Orientation Straight, Air Inlet Connection Size 1/4 in, Air Inlet Gender Female, Max. Speed 25,000 RPM, Air Inlet Type NPT, Air Inlet 1/4 in NPT Female, Tool Style Straight, Kit Contents (1) Bare Tool, Includes Wrenches, Grip Style Barrel Grip, Safety Features Streamlined Safety Lever, Switch Location Top, Power Source Air Powered